Question

Find the radius of the sphere whose surface area is 15cm.step by step
I'll brainliest the answer ​​

Answer 1

Step-by-step explanation:

r=15

surface area of sphere 4pie r2

4* 3.14*225 =2826

Answer 2

Given :

$surface \: area \: of \: sphere= 15cm$

Formula :

$surface \: area \: of \: sphere =\pi {r}^{2}$

To find :

$radius = r$

$surface \: area \: of \: sphere = 4\pi {r}^{2} \\15 = 4 \times 3.14 \times {r}^{2} \\ 15 = 12.56 \times {r}^{2} \\ \frac{15}{12 .56 } = {r}^{2} \\ {r}^{2} = 1.19 \\ r = \sqrt{1.19 } \\ r = 1.09cm$